<?php namespace App\Models; use Illuminate\Database\Eloquent\Model; class Cart extends Model { protected $fillable = [ 'user_id', 'quantity', 'frequency', 'static_frequency', 'price', 'amount', 'csr', 'status', 'product_static_option_id' ]; public function productStaticOption() { return $this->hasOne(ProductStaticOption::class,'id','product_static_option_id'); } }